Fan construction.



J. A. IVIcINTOSH.

FAN CONSTRUCTION.

APPLICATION FILED APR. 1. 1912.

Patented Mar. 26, 1918.

//Vl/E/VTOR /4. MC [/V TOSH.

a ATTOR/VEX JAMES a. MoINTOSH, or nnrnorr, mromean, assrsnon or ONE-HALF 'ro JOHN G.

FAN CONSTRUCTION.

Specification of Letters Patent.

Patented Mar. 26, Wild.

Application filed Apri17, 1917. Seriallto. 160,357.

To all whom it may concern:

Be it known that 1, JAMES A. MoINTosH, a citizen of the United States, residing at Detroit, county of Wayne, State of Michigan, have invented a certain new and useful Improvement in Fan Construction, and declare the following to be a full, clear, and

. exact description of the same, such as will 1 the fan blades and the spider are economifan blades and the connecting means bespider. This comprises a cally cut out of the blank.

Heretofore in the construction of fans great wastage of material has occurred, especially where it is attempted to cut the tween the fan blades out of a single piece of stock.

My invention consists of providing each fan blade with an integral ortion a of' the alf ring formmg in conjunction with the blade roughly a heel b and a toe or tongue 0. Now adverting to Fig. 3, it will be seen that the too a of the spider section fits into the arch be;

tween the heel and the toe of the succeeding blade and spider portion so that when the fan "sections are stamped out of the blank very little wastage occurs.

As shown in Fig. 1, about half of the spider section can be made to overlap half of the spider section of the succeeding blade and a portion of the blade itself. These overlapped portions may be riveted or spotwelded together as at 03 so as to practically make them an integral structure. Similarly the other two sections may be fastened to each other and to the aforesaid sections forming a complete fan as shown in Fig. 2.

What I claim is:

1. A fan made up of a plurality of blades having continuationsi in the form of IL- shaped half rings and tongues, and means for securing these half rings, tongues and blades in overlapped relation to form acomplete fan.

2. A fan comprising blades and continuations in the form of half rings having,

roughly, a heel and a projecting toe extending to one side of the axis of each blade,

and means for securing said. continuationsand blades together.

3. A fan comprising a plurality of blades,

, each blade havmg an integral continuation in theform of a segment provided with a projecting tongue, the said pro ecting tongue adapted to reach to the succeeding blade to which it is secured.

In testimony whereof, I sign this specification.

' JAE/ES A. MQINTOSH. 

